Let be three complex numbers satisfying Let and for If and are the affixes of points and respectively in the Argand plane, then has its 

a) 
Incentre at the origin 
b) 
Centroid at the origin 
c) 
Circumcentre at the origin 
d) 
Orthocentre at the origin 
Let be three complex numbers satisfying Let and for If and are the affixes of points and respectively in the Argand plane, then has its 

a) 
Incentre at the origin 
b) 
Centroid at the origin 
c) 
Circumcentre at the origin 
d) 
Orthocentre at the origin 
(b)
We have,
and
Hence, the centroid of is at the origin